<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar_box">
        <img
          src="../assets/logo.png"
          alt=""
        >
      </div>
      <!-- 表单 -->
      <el-form
        label-width="0px"
        class="login_from"
        :model="loginFrom"
        :rules="loginFromRules"
        ref="loginFromRef"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-user"
            v-model="loginFrom.username"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            v-model="loginFrom.password"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button
            type="primary"
            @click="login"
          >登录</el-button>
          <el-button
            type="info"
            @click="reset"
          >重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      loginFrom: {
        username: 'admin',
        password: '123456'
      },
      loginFromRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    reset () {
      this.$refs.loginFromRef.resetFields()
    },
    login () {
      this.$refs.loginFromRef.validate(async bool => {
        if (!bool) {
          console.log('效验失败')
          return
        }
        console.log('效验成功')
        const { data: res } = await this.$http.post('login', this.loginFrom)
        console.log(res)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        console.log(res.data)
        // 将返回的token凭证储存在本地中
        window.sessionStorage.setItem('token', res.data.token)
        // 跳转到后台主页
        this.$router.push('/home')
      })
    }
  },
  computed: {},
  watch: {},
  filters: {},
  components: {},
  created () { },
  mounted () { }
}
</script>

<style scoped lang='less'>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    .avatar_box {
      position: absolute;
      width: 130px;
      height: 130px;
      border-radius: 50%;
      background-color: #fff;
      left: 50%;
      transform: translate(-50%, -50%);
      box-shadow: 0 0 10px #ddd;
      padding: 10px;
      img {
        display: block;
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #ccc;
      }
    }
    .login_from {
      position: absolute;
      bottom: 0;
      width: 100%;
      padding: 20px;
      box-sizing: border-box;
      .btns {
        text-align: right;
      }
    }
  }
}
</style>
